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UUID Generator

Generate, validate, and inspect universally unique identifiers

Time-based

UUID V1

d1953170-43c5-11f1-a948-f302fb269f95
Random

UUID V4

00082310-80ab-4aeb-9107-bbb64a66fe7e
Name-based

UUID V5

984da8bc-b916-531d-bdb9-317745579e59

Batch Generator

Version

UUID Validator

Paste a UUID to check if it's valid and identify its version.

UUID Versions Explained

Version 1

Uses the current timestamp and MAC address. Guarantees uniqueness but may expose hardware identity.

Version 4

Purely random. The most commonly used version — simple, private, and virtually zero collision probability.

Version 5

Derived from a namespace + name using SHA-1. Deterministic: the same inputs always produce the same UUID.